The Correlation between the Diffusion Rate of a Substance and its Molecular Weight ABSTRACT To test the effect of molecular weight on the rate of diffusion‚ various experiments were performed. One of which is the glass tube test wherein cotton balls of the same size were moistened in two different substances (NH4OH and HCl). These cotton balls were plugged at each side of a glass tube. After some time‚ formation of a white ring occurred. The white ring‚ in fact‚ is a product of the reaction between
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March 8‚ 2012 Role of ecological and environmental differences in natural selection of Geospiza difficilis in Darwin and Santiago Islands Introduction Few places are better suited for the study of biodiversity and evolution than the Galapagos Islands‚ home to Darwin’s finches. Free of most anthropogenic influences‚ these islands provide researchers with a natural‚ undisturbed environment in which to study the functions of natural selection as Darwin did 177 years ago (Grant‚ 2003). Since then‚
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The aim of this essay is to compare the extent of human and natural forces on the formation and retention of two different coastal villages along the North Norfolk coastal zone. NATURAL FORCES ALWAYS ACT….This essay will be evaluating the different coastal management CHOICES measures and how they have impacted the changing coastline‚ and the different elements influencing the choice of coastal protection methods. The coast is the area between the land and the sea. Depending on the elements visible
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OPTION A - SIGHT AND WAVE PHENOMENA 1. Standing (or stationary) waves Formation of standing waves : When two identical waves travel along a string in opposite directions (ex : flick a rope attached at the other end)‚ they will superpose and create a standing wave (use animation to visualize what happens). Nodes‚ antinodes. Differences between progressive and standing waves : Wave profile doesn’t progress ; All points between two nodes are in phase (they all reach their maximum at the
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Bernard Malamud’s The Natural follows Roy Hobbs’ baseball career. Roy’s talents give him great success in the game‚ but they are consistently overshadowed by his failures. He tries hard‚ but still cannot accomplish many of his goals. Famed author Joyce Carol Oates says that art should arouse emotions and expand sympathies. The novel makes the reader remember their past‚ and the times when they too were unable to succeed. The reader constantly empathizes with Roy‚ since failure is a part of life‚
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Practice Internal Assessment Report Christine Zhu St Pauls Grammar School 00296648 Biology HL Trial 1 & 2: 8/4/13 Trial 3 & 4: 10/4/13 Photo credits: Smarties by Andrew Dean‚ copyright Rebecca Douglas‚ retrieved 9/4/13 http://rebeccadouglas.photoshelter.com/image/I0000WDNZi_s2W4A Smarties Diffusion Experiment RESEARCH QUESTION How does changing the colour of smarties affect the extent of its passive diffusion? INTRODUCTION Passive diffusion‚ also known as simple diffusion‚ is used to
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The Effect of Molecular Weight on the Diffusion Rate in Substances Nadjah B. Hadji Amer Gladys A. Oliveros Rochelle R. Yaῆez Jan Remon B. Caliguid Group 2- Sec. W78-1 August 14‚ 2013 A scientific paper submitted in partial fulfilment of requirements in Biology 101.1 under Prof. Kimverly Hazel Coronel‚ 1st sem‚ 2013-2014 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using the agar-water gel test. The agar-water gel set up was composed of a six petri
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Name: Joie Vincent R. Dagohoy Date performed: 07-01-13 Student Number: 2009-33281 Date submitted: 07-08-13 Exercise 2 Formulation‚ Testing of Hypothesis‚ and Experimental Design I. Objectives: a. to define diffusion and demonstrate this process in gases b. to cite molecular weight and time as two factors affecting the rate of diffusion c. to formulate a hypothesis on the relationship of each of these factors on the rate of diffusion d. to conduct and experiment
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The effect of molecular weight on the diffusion rates of Potassium permanganate (KMnO4)‚ Potassium dichromate(K2Cr2O7) and Methylene Blue^1 _________________ Group 3 Sec. X-1L February 6‚ 2012 ____________________ ABSTRACT The effect of molecular weight on the diffusion of substances were tested through the use of agar-water gel with three wells placed in a petri dish. Drops of three different substances namely: Potassium
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I’ve an important announcement to make. I have just spent the past few days looking of what may well be the worst climate paper yet produced. You heard that right – the absolute worst. This paper is so poor it makes Khilyuk and Chilingar (2006) look like Einstein’s special theory of relativity in comparison. So anyway‚ I decided to go all Climate Audit on this paper partly to get a handle on the solar influence on climate that denialists are always on about (there is actually some decent literature
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